How do you solve inequalities with absolute value?
To solve an absolute value inequality involving “less than,” such as |X|≤p, replace it with the compound inequality −p≤X≤p and then solve as usual. To solve an absolute value inequality involving “greater than,” such as |X|≥p, replace it with the compound inequality X≤−p or X≥p and then solve as usual.
What is an example of an absolute value inequality?
An absolute value inequality is an expression with absolute functions as well as inequality signs. For example, the expression |x + 3| > 1 is an absolute value inequality containing a greater than symbol. There are four different inequality symbols to choose from.
How do you solve an absolute value equation?
To solve an equation containing absolute value, isolate the absolute value on one side of the equation. Then set its contents equal to both the positive and negative value of the number on the other side of the equation and solve both equations. Solve | x | + 2 = 5.
What is an example of absolute value?
Definitions: The absolute value (or modulus) | x | of a real number x is the non-negative value of x without regard to its sign. For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5. The absolute value of a number may be thought of as its distance from zero along real number line.
How do you write absolute value in math?
Absolute Value Examples and Equations The most common way to represent the absolute value of a number or expression is to surround it with the absolute value symbol: two vertical straight lines. |6| = 6 means “the absolute value of 6 is 6.” |–6| = 6 means “the absolute value of –6 is 6.”
What is the first step when solving an absolute value equation?
| Step 1: Isolate the absolute value | |3x – 6| – 9 = -3 |3x – 6| = 6 |
|---|---|
| Step 2: Is the number on the other side of the equation negative? | No, it’s a positive number, 6, so continue on to step 3 |
| Step 3: Write two equations without absolute value bars | 3x – 6 = 6 |
| Step 4: Solve both equations | 3x – 6 = 6 3x = 12 x = 4 |
What is absolute value example?
The absolute value (or modulus) | x | of a real number x is the non-negative value of x without regard to its sign. For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5. The absolute value of a number may be thought of as its distance from zero along real number line.
What is the absolute value of |- 12 |?
Algebra Examples The absolute value is the distance between a number and zero. The distance between −12 and 0 is 12 .